4034198 5550060 Turbo Speed Sensor for Cummins Holset Turbo for ISB ISC ISL ISX Interchange Part Numbers: 5550060 4034198 4032806 2839964 4327174 2839964 3782559 4034201 4307345 4327173 4041922 2837371 4327188 2837371 4032173 4307345 4327173